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<br />Surface-Water Sampling <br /> <br />Surface water sampling is performed by submerging laboratory-supplied sample containers or a <br />decontaminated sampling dipper into the surface water channel at the designated sampling <br />stations. At the time of sampling, a YSI 3560 Water Quality Meter® (or equivalent) was used to <br />measure field parameters (EC, pH, temperature, and turbidity) and recorded on a Well Data <br />Sheet. <br /> <br />Leachate Sampling <br /> <br />Leachate samples are collected by submerging laboratory-supplied sample containers or a <br />decontaminated sampling dipper into the leachate pond at the designated sampling station. At <br />the time of sampling, a YSI 3560 Water Quality Meter® (or equivalent) was used to measure <br />field parameters (EC and pH) and recorded on a Well Data Sheet. <br /> <br />Lysimeter Sampling <br /> <br />Soil-pore liquid sampling was conducted using the following sampling procedures: <br /> <br />• Soil-pore liquid was drawn into the lysimeter by applying a vacuum of a minimum of 25 <br />inches of mercury to the vacuum/pressure tubing approximately 72 hours prior to sampling. <br />After the vacuum had been applied to the vacuum line, it was clamped shut with a ring <br />clamp and disconnected from the pump. During the vacuum application procedure, the <br />sample collection tube remained shut. <br />• The period of time for sample collection depends on the soil in which the lysimeter is <br />installed and the available moisture. To collect the liquid sample, the vacuum/pressure line <br />was attached to a hand pump and the end of the sample collection tube was placed in the <br />sample collection vessel. The hand pump was gently pumped, creating just enough <br />pressure to push any sample out of the lysimeter that might have collected into the sample <br />bottle. <br />• <br />Sample Collection and Handling <br /> <br />• Each sample was collected in approved laboratory supplied sample containers filled <br />completely and immediately capped, labeled, and placed in a cooler with ice. <br />• Samples were collected in order of volatility. VOCs first, followed by SVOCs, herbicides, <br />pesticides, PCBs, general chemistry, and metals. <br />• Samples for VOC analysis were filled by pouring the sample down the sides of the container <br />to minimize aeration and capped with no airspace. <br />• Collected samples, accompanied by a trip blank, were placed immediately in an ice-filled <br />cooler for transport to the state-certified testing laboratory. Samples were kept chilled (at <br />about 4°C) until delivery.